I have had snakes try to board my pontoon, met beavers, otters, muskrats, eagles, osprey, and bats. But the most interesting and recent was on a lake in central Oregon where I was told that if I cought a chub to "throw it up in the air and a osprey would take it. Well I didn't catch a chub. But every time I cought a trout I would see a osprey checking me out. As I was removing the hook from a trout it flipped out of my net and was floating on its side. Here came mr. osprey who missed on the first pass and as he was turning around the trout recovered and headed for deep water.